During acute kidney failure , kidneys lose their filtering ability and body fluids can rise to dangerous levels. Learn what causes this condition and how to treat it. AKI is a term for when kidneys suddenly lose their ability to filter waste from the blood. It replaces the term ' acute renal failure ' and can have many causes, symptoms, and complications. Acute kidney failure is when your kidneys stop working suddenly. Learn about the causes, symptoms, diagnosis, and treatment of this condition, and how it differs from chronic kidney disease. Acute kidney failure ( acute kidney injury) happens when your kidneys suddenly stop functioning and cannot filter waste and toxins from your blood.
